The SD15 was first announced in September 2008 at the Photokina trade show in Cologne, Germany. Since then, it has been hit by numerous delays, with Sigma claiming in February this year the camera would soon reach the UK. But, photographers will have to wait until next month to get their hands on the new camera

The SD15 sports a Foveon X3 sensor, which Sigma claims 'can capture all primary RGB colours at each and every pixel location arranged in three layers'. It also features the True II image processing engine, providing enough power to reproduce high definition pictures 'rich in gradation'.

The SD15 is the fourth DSLR built entirely by Sigma. It released, since October 2002, the SD9, SD10 and SD14.

It features a 77-segment AE sensor, which allows for exposure accuracy using new AE algorithms, claims Sigma. It can shoot up to 3fps for up to 21 raw images. The camera also features a three-inch TFT LCD screen, a dust protector to prevent dust from entering the camera's body, and a pentaprism viewfinder with 98% coverage.

The SD15 has a sensitivity of ISO100 to ISO1600, which can be extended to ISO50 and ISO3200. It also has two anti-vibration systems with a mirror lock-up mechanism, which raises the mirror to prevent vibration when the shutter is released.

Now, Sigma has confirmed that the camera will retail at £900. For more information, visit www.sigma-sd.com/sd15.